Cheap flights from Seoul to Chiang Mai in October 2026
October 2026 sits below the usual range on this route. 19 Oct - 25 Oct looks strongest right now.
Lowest fare
€224
Typical fare
€253
Current signal
Below typical by 11%
High fare
€514
Destination view
October 2026 fares to Chiang Mai from Seoul.
Week by week
Which week looks strongest in October 2026?
Start with the strongest week, then compare the live fares below. This keeps the page focused on one question: when does this route usually open best inside October 2026?
Week window
5 Oct - 11 Oct
Current fares sit 1% below the usual range for this week.
Week window
12 Oct - 18 Oct
This week is trading near the route norm right now.
Week window
19 Oct - 25 Oct
Current fares sit 50% below the usual range for this week.
Week window
26 Oct - 31 Oct
This week is trading near the route norm right now.
Live fares now
Bookable fares for October 2026
Open a live fare first if you are ready to book. These cards keep the month page tied to real inventory, not filler copy.
Sierra National Airlines
€234
10 Oct → 21 Oct
Updated 15h ago
Search intent answers
Quick answers for October 2026
Is October 2026 a good time to fly from Seoul to Chiang Mai?
Yes. Current fares in October 2026 are running 11% below the usual range on this route.
Which week looks cheapest in October 2026?
19 Oct - 25 Oct is the clearest week to open first based on the current fare spread.
Are direct flights available on this route in October 2026?
Yes. We currently see 20 direct fares in this month window.